[Scons-dev] How to traverse the graph after files are read

[anatoly techtonik]

Interesting stuff. If I create an empty SConstruct:

    Entry("xxx")

Then `scons --tree=all` gives a tree with SConstruct
name included into the build graph:

    scons: `.' is up to date.
    +-.
      +-SConstruct
      +-xxx

I can understand that xxx is at the root, but why
SConstruct is also included?